
public class Calculator implements CalculatorInterface{
	
	public int add(int a,int b){
		return a+b;
	}
	public int sub(int a,int b){
		
		return a-b;
	}
	public int multi(int a,int b){
		return a*b;
		
	}
	
	public int div(int a,int b){
		return a/b;
	}
}
